Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Your message must
be between 20-3,000 characters!
Submit Requirement
Thank You！
Your requirement has been sent. we will contact you quickly!
{"title":"Aluminum Calcium DC Furnace Equipment","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/19\/43f431ea52893b4b3fae23933473-200x200-1\/aluminum_calcium_dc_furnace_equipment.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Electric Ladle Refining Furnace with Slag Detection and Temperature Measurement","imgUrl":"https:\/\/img.chinax.com\/nimg\/c2\/a2\/069ca1bd94255210a40a2715fbf1-200x200-1\/electric_ladle_refining_furnace_with_slag_detection_and_temperature_measurement.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Red Mud Ironmaking DC Furnace Equipment","imgUrl":"https:\/\/img.chinax.com\/nimg\/d3\/1a\/b3ef714da1edf6af5aab7e7d4c91-200x200-1\/red_mud_ironmaking_dc_furnace_equipment.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"6300 KVA Industrial Submerged Arc Furnace Industrial SAF Submerged Arc Furnace","imgUrl":"https:\/\/img.chinax.com\/nimg\/56\/12\/659bc9203f363d3e16153570079c-200x200-1\/6300_kva_industrial_submerged_arc_furnace_industrial_saf_submerged_arc_furnace_melting_furnace.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"36,000 kVA DC Titanium Slag Smelting Furnace with Closed Sealed Type for High","imgUrl":"https:\/\/img.chinax.com\/nimg\/25\/82\/040e89c79866256e5403a7c3f512-200x200-1\/36_2c000_kva_dc_titanium_slag_smelting_furnace_with_closed_sealed_type_for_high_titanium_slag_production.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Manganese Silicon Smelting Furnace","imgUrl":"https:\/\/img.chinax.com\/nimg\/6e\/04\/ccd212d45b8f5b6b4301f3540308-200x200-1\/manganese_silicon_smelting_furnace.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
{"title":"Low Microcarbon Ferrochrome Refining Equipment","imgUrl":"https:\/\/img.chinax.com\/nimg\/a6\/8b\/ab13174366b550b78206c4635e1f-200x200-1\/low_microcarbon_ferrochrome_refining_equipment.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Negotiate based on equipment processing capacity","Certification":"ISO 9001","Place of Origin":"China"}}
Aluminum Calcium DC Furnace Equipment Introduction
1. Equipment Positioning & Core Applications
The aluminum calcium DC furnace is a custom-designed DC arc furnace dedicated to the production of calcium aluminate. It is mainly used for high-temperature melting treatment of aluminum-containing solid wastes such as aluminum dross and aluminum slag to produce high-purity pre-melted calcium aluminate products. Widely applied in steel metallurgy, building materials, and solid waste resource utilization fields, it serves as an upgraded alternative to the traditional rotary kiln process.
2. Core Working Principle
Electrical-to-Thermal Energy Conversion: Powered by a DC power supply system, a stable DC arc is generated between the top graphite electrode and the furnace bottom anode. The arc core temperature reaches up to 10,000°C, with the outer flame temperature around 4,000°C. The high temperature of the arc completely melts raw materials such as aluminum dross and lime.
Electromagnetic Stirring Effect: The DC current generates a constant magnetic field, driving directional flow in the molten pool. This enhances mass and heat transfer, resulting in more uniform material reactions and significantly improving the purity and composition stability of calcium aluminate.
Continuous/Semi-Continuous Smelting: Raw materials are fed from the furnace top feeding port, and molten calcium aluminate is discharged from the furnace taphole. This enables efficient continuous production, with power consumption per ton of finished product as low as 700 kWh.
Contains the high-temperature molten pool, withstands thermal loads and mechanical stress. The water-cooled furnace roof effectively reduces heat loss.
Electrode System
Top graphite electrode, electrode lifting mechanism, conductive cross arm
Serves as the cathode for arc generation. PLC intelligent control of electrode position ensures stable arc power.
Power Supply System
High-power DC rectifier power supply, transformer, control cabinet
Outputs stable DC power with a power factor ≥ 0.95, causing no harmonic interference to the power grid.
Control System
PLC automatic control system, temperature/pressure sensors
Enables fully automatic control of electrode lifting, power regulation, and smelting rhythm.
Auxiliary Systems
Dust collection system, cooling system, feeding system
4. Key Technical Advantages (vs. Traditional AC Furnaces/Rotary Kilns)
✅ High Efficiency & Energy Saving: Saves over 15% electricity compared to AC furnaces, reduces electrode consumption by 35%, and increases output by 20% at the same power. The power consumption per ton index is far lower than traditional processes.
✅ High Product Purity: High-temperature melting above 2,500°C enables complete reaction of raw materials, allowing precise adjustment of alumina content without the under-firing/over-firing issues common in rotary kilns.
✅ Stable & Reliable Operation: DC arc eliminates power fluctuations in AC systems, ensuring uniform electromagnetic stirring in the molten pool. The risk of furnace bottom burn-through is significantly reduced, leading to low equipment failure rates.
✅ Strong Environmental Adaptability: Can be equipped with high-efficiency dust collection systems to treat flue gas generated during smelting, meeting environmental requirements for solid waste resource utilization.
✅ Adaptable to Solid Waste Treatment: Directly processes aluminum-containing industrial solid wastes such as aluminum dross and red mud, achieving reduction and resource utilization of hazardous waste with both economic and environmental benefits.
5. Typical Technical Parameters (2000-4000 kVA Models)
Parameter Item
Specification Range
Rated Capacity
2000~4000 kVA
Working Voltage
120~300 V (adjustable)
Working Current
6000~15000 A (adjustable)
Smelting Temperature
2000~2500 °C
Power Consumption per Ton
700~900 kWh/ton
Electrode Diameter
300~500 mm
Furnace Diameter
3~5 m (customizable)
Control Mode
PLC Fully Automatic Control
6. Application Scenarios & Process Value
Production of Steelmaking Auxiliary Materials: High-purity calcium aluminate acts as a refining slag for desulfurization and dephosphorization in steelmaking, significantly improving molten steel purity and serving as a high-quality metallurgical auxiliary material.
Resource Utilization of Aluminum Dross Solid Waste: Converts secondary aluminum dross into high-value calcium aluminate products, turning waste into treasure and solving the problem of solid waste disposal in the aluminum industry.
Raw Materials for the Building Materials Industry: Pre-melted calcium aluminate can be used as a raw material for cement and refractory materials, improving product performance while reducing production costs.
7. Comparison with Traditional Processes
Comparison Dimension
Aluminum Calcium DC Furnace
Traditional Rotary Kiln
AC Submerged Arc Furnace
Product Purity
High (Complete melting reaction)
Low (Prone to under-firing/uneven composition)
Medium (Poor arc stability)
Energy Consumption
Low (700-900 kWh/ton)
High (Large coal/natural gas consumption)
Medium (15% higher than DC furnaces)
Electrode Consumption
Low (Stable DC arc)
No electrode consumption
High (High three-phase electrode wear)
Environmental Performance
Easy to equip with dust collection systems
Difficult flue gas treatment
Harmonic interference to the power grid
Production Efficiency
High (Continuous smelting)
Low (Intermittent/semi-continuous)
Medium (Power fluctuations affect production rhythm)
Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall... Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...
